Unit 2 How often do you exercise Section B 2a-2e 课件（共27张PPT）人教版八年级上册

(共27张PPT)
Unit 2
How often do you exercise
Section B (2a~2e)
Learning aims
1. 通过本文的学习，能够掌握百分比的表达和饼图的绘制方法。
2. 能够了解统计类文章的语篇特征，以及运用阅读策略寻找文本结构和处理课文细节等。
Free talk
Before our class, let’s talk about one question.
What do you usually do in your free time
do my homework first
play on the phone
use the internet
help with the housework
play computer games
play sports
go to the movies
Rank these activities according to how often you think your classmates do them (1=most often, 6= least often).
2a
watch TV
go to the movies
play computer games
exercise or play sports
use the Internet
go camping in the country
Learn to walk before you run
What do No. 5 High School Students do in their free time
It’s a(n) ___.
A. letter
B. advertisement
C. survey report
D. dairy
Read and answer.
What's the type of the article
last month
No. 5 High School students
free time activities: exercise,use of the Internet and watching TV
Task1:finish the mind map
Last month we asked our students about their free time activities. Our questions were about exercise, use of the Internet and watching TV. Here are the results.
The survey introduction(介绍)
Para. 1
when
who
what
Read carefully
healthy:
adj
keep healthy
health :n
unhealthy
What’s your favorite sth
_________%
one to three times a week
_________%
never (not...at all)
_________%
four to six times a week
_________%
every day
They found that...percent of the students in their class exercise...times a week.
15
45
20
20
What do you think of this result
Most students always do exercise.
02
Exercise
_________%
at least three or four times a week
_________%
every day
They were surprised to find that...percent of the students in their class...every day.
90
10
What do they use the Internet for
02
Use the Internet
Most students use it for fun and not for homework.
What do you use the Internet for
02
Watch TV
_________%
every day
_________%
four to six times a week
...percent of the students...one to three times a week.
13
85
_________%
one to three times a week
2
Why did the writer think the answers were interesting
Maybe the writer thought not many students watch TV.
The game shows.
Which program do they like best
15
20
20
45
10
90
13
2
85
Is it good to relax by using the Internet or watching game shows
Yes, it is. But neither of them is the best way.
1. What percent of the students do not exercise at all
2. What percent of the students use the Internet every day
3. How often do most students watch TV What do they usually watch
4. What does the writer think is the best way to relax Why
5. Do you think the students in No. 5 are healthy Why or why not
2c Read the article again and answer the questions.
Twenty percent of the students.
Ninety percent of the students.
Most students watch TV every day.
They usually watch sports and game shows.
Exercise. Because it’s healthy for the mind and the body, and you can spend time with your friends and family as you play together.
No, I don’t think so.
Because they use the Internet for fun and not for homework, and they watch TV too much.
2d According to the article and the pie charts, write sentences with the percentages using always, usually or sometimes.
1. 90%：______________________________________
2. 85% : ______________________________________
3. 45%：______________________________________
4. 10%: _______________________________________
5. 13%: _______________________________________
6. 2%: ________________________________________
Ninety percent of the students always use the Internet.
Eighty-five percent of the students always watch TV.
Forty-five percent of the students usually exercise.
Ten percent of the students usually use the Internet.
Thirteen percent of the students usually watch TV.
Two percent of the students sometimes watch TV.
2e
Choose one of these free time activities or think of your own. Then ask your classmates how often they do this activity and make a pie chart. Show the pie chart to your class.
2e
Group Work
List two activities you all want to do a survey about.
Ask your classmates and get the data.
Make your own pie chart.
1. We found that only fifteen percent of our students exercise every day.
percent 名词，意为“百分之……”
e.g. Eighty percent of the students in
our class exercise every day.
我们班里80%的学生每天都锻
炼。
percent百分数 基数词 + percent 没有复数 以它所修饰的名词来判断谓语的单复数
percent做主语时，谓语动词的数要根据其后面的名词来确定。
e.g. Fifty percent of the apples are bad.
50%的苹果都坏了。
Twenty percent of the meat is in the
fridge.
20%的肉都在冰箱。
Twenty percent of the workers _____(be) women.
Thirty percent of time _______(go) by.
are
went
2. And twenty percent do not exercise at all!
not…at all 用于否定句，意为“一点也不”。 not应和be动词、助动词或情态动词连接
e.g. The story isn’t interesting at all.
那个故事一点也没有趣。
The old man can’t use the computer
at all. 那位老人一点也不会用电脑。
1. surprised 的用法
我们队这个消息感到很意外.We are surprised at the news.
我在这里见到你很意外.I am very surprised to meet you here.
surprised 意为“感到意外的”，是形容词。
be surprised at... 对......感到惊讶
be surprised to do sth.做某事感到惊讶
All of us were _____ to hear the _____ news. [ ]
A. surprised; surprising B. surprise; surprising
C. surprised; surprise D. surprising; surprised
A
二、用所给单词的适当形式填空。
1. Drinking milk every day is good for your ________(healthy).
2. Tom exercises two or three________(time) a week.
3. She was______________(surprise) to find her lost wallet.
4. It's good________(relax) by listening to music.
5. He likes sports, such as_____________(swim) and basketball.
health
times
surprised
to relax
swimming
三、单项选择。
( )11.They practice English ______ joining the English club.
A．by　　　　　B．in　　　C．on　　　　 　D．with
( )12.My father likes to take a bus to his office _____ he has a car.
A．although B．if C．because D．when
( )13.In this shop，60 _____of the watches _____ from other countries.(易错题)
A．percents；are B．percent；is
C．percents；is D．percent；are
A
A
D
( )14.I enjoy playing computer games，but I can't _____ too much time ______that.
A．take；doing B．spend；doing C．spend；to do D．take；to do
( )15.He tried to get into the room ___ the window，because he couldn't open the door.(易错题)
A．across B．for C．along D．through
B
D
三、根据汉语意思完成句子
1.关于我们问的看电视的问题的回答是很有趣的。
The　　　　 　　　our questions about watching television were interesting.
2.调查显示,许多孩子上网仅仅是为了娱乐。
According to the survey, lots of children　　 　　　　just　　　　 　　　　.
3.我喜欢运动,例如跑步和打网球。
I like sports,　　　　 　　　　 　　　　and playing tennis.
4.我们学校多数学生每周锻炼三到五次。
Most students in our school 　　　　at least　　　 　　 　　　　 　　a week.
5.这对我的眼睛有好处。
It　　　　 　　　　 　　　　my eyes.
　is good for
answers to
go online
for fun
such as running
exercise
three to five times
Summary
survey report
survey background
(Para.1)
survey results
(Para.2-4)
conclusion
(Para.5)
It is good to relax by ________________ or ____________________,
but we think the best way to relax is through __________.
using the Internet
watching game shows
exercise
Homework
After class, it’s good for you to improve by:
1. retelling the survey report according to the pie charts;
2. finishing your survey and the pie chart in 2e.